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3 years ago

How does the structure of the alveoli relate to its function in the lungs

Physics

1 answer:

slavikrds [6]3 years ago

8 0

Structure of Alveoli provides more surface area for lungs, to exchange the gases & for process of respiration

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It is true
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2 years ago

an object is moving with initial velocity of 5 m/s. After 10 seconds final velocity is 10 m/s. Calculate its acceleration.

Brut [27]

Answer:

0.5m/s2

Explanation:

acceleration= change in velocity/time taken

= v - u/ t

= 10-5/10

=5/10

= 0.5m/s2

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2 years ago

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2 years ago

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Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with e

antiseptic1488 [7]

Answer:

The length of an edge of each small cube is 3.43 nm.

Explanation:

Given that,

Temperature of ideal gas =27.0°C

Pressure = 1.00 atm

We need to calculate the length of an edge of each small cube

Using gas equation

$PV=nRT$

$PV=NkT$

$V=\dfrac{NkT}{P}$

For, N = 1

Where,

N = number of molecule

k = Boltzmann constant

T = temperature

P= pressure

Put the value into the formula

$V=\dfrac{1\times1.38\times10^{-23}\times(27+273)}{1.03\times10^{5}}$

$V=4.019\times10^{-26}\ m^3$

Now, for the cube

$V=L^3$

$L=V^{\frac{1}{3}}$

$L=(4.019\times10^{-26})^{\frac{1}{3}}$

$L=3.43\times10^{-9}\ m$

$L=3.43 nm$

Hence, The length of an edge of each small cube is 3.43 nm.

3 0

3 years ago

If a car accelerates from a speed of 10 m/s at an acceleration of 2 m/s2 for 3s.

Flauer [41]

Answer:

$\boxed{\sf Final \ speed \ of \ the \ car = 16 \ m/s}$

Given:

Initial speed (u) = 10 m/s

Acceleration (a) = 2 m/s²

Time taken (t) = 3s

To Find:

Final speed (v) of the car

Explanation:

From equation of motion we have:

$\boxed{ \bold{v = u + at}}$

By substituting value of u, a & t in the equation we get:

$\sf \implies v = 10 + 2\times 3 \\ \\ \sf \implies v = 10 + 6 \\ \\ \sf \implies v = 16 \: m {s}^{ - 1}$

$\therefore$

Final speed (v) of the car = 16 m/s

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3 years ago